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Ability of a Regional-Scale Model to Predict the Genesis of Intense Mesoscale Convective Systems
Publisher: American Meteorological Society
Abstract: This paper presents the mesoscale part of a two-part evaluation of thirty forecasts produced by a mesoscalenumerical weather prediction model (MASS 2.0). The general approach taken to evaluate the mesoscale predictivecapabilities ...
The Role of an Apparent Mesoscale Frontogenetic Circulation in Squall Line Initiation
Publisher: American Meteorological Society
Abstract: A line of severe thunderstorms is observed in Satellite imagery to develop explosively from a narrow line of shallow convection at the most rapidly intensifying part of a surface cold front. Concurrent evaporation of the ...
Real-Time Detection of Split Fronts Using Mesoscale Models and WSR-88D Radar Products
Publisher: American Meteorological Society
Abstract: A structured methodology for detecting the presence of split cold fronts in an operational forecast environment is developed and applied to a case in which a split front passed over a region of cold air damming in the ...
An Automated System for the Analysis of Gravity Waves and Other Mesoscale Phenomena
Publisher: American Meteorological Society
Abstract: An automated near-real-time system for the surface analysis of gravity waves and other mesoscale phenomena is developed, tested, and applied to several cases. Five-minute observations from the Automated Surface Observing ...
Numerical Simulations of a Gravity Wave Event over CCOPE. Part II: Waves Generated by an Orographic Density Current
Publisher: American Meteorological Society
Abstract: A mesoscale numerical model and detailed observations are used to investigate the generation and maintenance of a mesoscale gravity wave event observed in eastern Montana on 11 July 1981 during the Cooperative Convective ...
Interaction of Upper-Tropospheric Turbulence and Gravity Waves as Obtained from Spectral and Structure Function Analyses
Publisher: American Meteorological Society
Abstract: Spectral and structure function analyses of horizontal velocity fields observed in the upper troposphere and lower stratosphere during the Severe Clear Air Turbulence Collides with Air Traffic (SCATCAT) field program, ...
A Nonclassical Cold Front Observed during COPS-91: Frontal Structure and the Process of Severe Storm Initiation
Publisher: American Meteorological Society
Abstract: This case study addresses the issue of gravity current and bore development at surface cold fronts, and the role of these phenomena in the generation of severe frontal convection. The event investigated occurred on 27 April ...
The Evolution of an Oklahoma Dryline. part II: Boundary-Layer Forcing of Mesoconvective Systems
Publisher: American Meteorological Society
Abstract: Data from the National Severe Storms Laboratory surface mesonetwork are objectively analyzed to give insight into processes that contributed to the development of three tornadic mesoconvective systems near the 8 June 1974 ...
The Evolution of an Oklahoma Dryline. Part I: A Meso- and Subsynoptic-Scale Analysis
Publisher: American Meteorological Society
Abstract: A study is made of the 8 June 1974 Oklahoma dryline and tornado outbreak case, using data synthesis 1) to fit existing concepts on dryline structure and behavior to this case, and 2) to identify processes contributing to ...